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erbium
e r b i u m hex:#101;#114;#98;#105;#117;#109;
The Salt of the World?
- Erbium - n. - A rare metallic element associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden. Symbol Er. Atomic weight 165.9. Its salts are rose-colored and give characteristic spectra. Its sesquioxide is called erbia.